My D800 has a seemingly bottomless supply of oil to throw at the sensor. No matter how spotless my sensor after a cleaning, I get spots almost immediately upon my next shoot. This is really just a minor annoyance. Even on a textured background, Photoshop's content-aware cloning and healing tools are so good that you can easily remove spots wherever they are with no discernible negative impact to the image.

While annoying, the issue is no different or challenging than back in the days when we had our slides drum scanned. They would almost always come back with dust spots. Back in the 90s, spotting your scans was par for the course. It would be nice to have a DSLR without this problem, but then you also have dust to contend with.